Expressions of HER-2,p53,Estrogen Receptor,and Progesterone Receptor in Tissues of Invasive Ductal Breast Carcinoma with Different Clinical Stages / 中山大学学报(医学科学版)

[Objective] Expressions of human epidermal growth factor receptor 2(HER-2),p53,estrogen receptor (ER),and progesterone receptor (PR) in tissues of breast invasive ductal carcinoma are not only applied to determine the therapeutic regimen,but they may also be related to the prognosis.We investigated the levels of these proteins among different clinical stages and the correlations.[Method] One hundred and thirty-eight tissues from cases with breast invasive ductal carcinoma were tested with immunohistochemistry.New scoring standards and rank test were applied.The indices were digitalized and semi-quantified.[Results] In the tissues from high clinical stage,the expression of HER2 was significantly increased,while expression of PR was markedly decreased.[Conclusion] Expression of HER2 and PR might be better markers for predicting clinical stages and prognosis.

Distribution of poly(ADP-ribose) polymerase pseudogene polymorphism and association with susceptibility to lung cancer in Chinese people / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To study the distribution of poly(ADP-ribose) polymerase(PARP) pseudogene polymorphism and the association with susceptibility to lung cancer in Chinese people.</p><p><b>METHODS</b>The subjects of this study included 63 patients with lung cancer and 82 healthy controls matched in gender and age. Genome DNA was extracted from white blood cells. Products from PCR with a pair of specific primer were electrophoresized in agarose including EB. Under ultraviolet, observation and imaging were performed.</p><p><b>RESULTS</b>There was no significant difference in genotype between the cases and controls. The frequencies of B allele in cases and controls were 0.095 and 0.116 respectively. Whether there was B allele or not, smoking was a risk factor of lung cancer (P<0.05). As the genotype was AA and AB or BB, smoking OR was 2.28 and 4.83 respectively. Among non-smokers, the risk at lung cancer did not increase in AB or BB genotypes(P=0.202).</p><p><b>CONCLUSION</b>Frequency of B allele is relatively lower in Chinese people than in other races. In smokers, B allele may be a susceptible marker of lung cancer, and there is synergistic function between B allele and smoking.</p>